Lawn edger



Jan. 27, 1953 J. s. wlcK LAWN EDGER med April 2, 1951 l mf/ma. 70m/.5TMa, ,47m/@Vin Patented Jan. 27, 1953 UNITED STATES OFFICE 2 Claims.

This invention relates to a lawn edger of the type in which a toothedwheel operates in conjunction with a blade for the purpose of cuttingthe grass at the edge of a lawn.

This invention is a continuation-in-part of my application filed. April11, 1950, Serial Number 155,371, entitled: Lawn Edgers, now abandoned.

An object of my invention is to provide a novel lawn edger in which theblade cooperating with the toothed wheel or disk is spring pressed inone direction so that this blade will have a limited rot-ary movementrelative to the toothed wheel.

A feature cf my invention is to provide a novel lawn edger in which thecutter blade is held in one position by means of a coil spring, and thisblade can rotate relative to the toothed wheel, thus giving ascissor-like cutting effect between the toothed wheel and the blade.

Other objects, advantages and features of invention may appear from theaccompanying drawing, the subjoined detailed description and theappended claims.

In the drawing:

Figure 1 is a side `elevation of my lawn edger.

Figure 2 is -a top plan view of the same.

Figure 3 is a side view of the edger showing the bla-de rotated withrespect to the cutter wheel.

Figure 4: is an enlarged perspective view of the blade.

Figure 5 is a side elevation of my lawn edger as viewed from the sideopposite that shown in Figure 1.

Referring more particularly to the drawing, the numeral I indicates ahandle of suitable length and on the lower end of this handle I secure apair of supporting arms 2 and 3, which are xedly attached to the handleand which support the cutting units, as follows:

A wheel 4 is journalled on a shaft 5, which extends through the arms 2and 3 and is fixedly attached to these arms. A toothed cutter disk 6 isxedly secured to one face of the wheel 4 by means of appropriate screws6. A cutter blade 1 is mounted on the shaft 5 and this blade extendsdiametrically across the disk 6. Only the lower end of the blade 1,however, bears against the face of the disk 6, since the blade 1 is bentas shown at 8. A coil spring 9 is attached to the pin I0 on the blade 1and to an appropriate lug I I on the arm 2. A pair of stops I2--l 3 arestruck up from the blade 1, the stop I2 serving to hold the blade 1 inits normal position when the spring 9 is under minimum tension.

Should the lower end of the blade 1 strike an obstruction of any kindwhile the lawn edger is being rolled along the edge of the lawn, theblade will tilt rearwardly until the stop I3 engages the arm 2, as shownin Figure 3. The spring 9 is now under additional tension and tends toreturn the blade 1 to the position shown in Figure 1.

In swinging the lower end of the blade 1 forwardly, a scissor-likecutting action occurs between the blade 1 and the teeth I4 of the disk6, and grass, roots, small twigs, and the like, will all cause the blade1 to swing on the shaft 5 and, consequently, an almost continuousscissor-like cutting action is occurring between the rotating disk 6 andthe blade 1.

I prefer that the teeth I4 of the disk 6 shall be shaped with one longtapered edge somewhat like the teeth of a saw so that a more eifectivecutting action is provided between the blade 1 and these teeth.

Having described my invention, I claim:

1. A lawn edger comprising a handle, a pair of arms on one end of saidhandle, a disk rotatably mounted in said arms, a blade extendingdiametrically across said disk, means pivotally mounting said blade, oneend of said blade bearing against one face of the disk, and spring meansattached to one end of said blade and pulling said blade in onedirection.

2. A lawn edger comprising a handle, a pair of arms mounted on one endof said handle, a wheel journalled between said arms, a toothed diskattached to one face of the wheel, a blade extending diametricallyacross said disk and journalled between said arms, a stop lug on theblade engaging one of said arms to limit rotational movement of theblade, and a coil spring extending from said blade to one of said arms.

JOHN S. WICK.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,212,057 Waller Aug. 20, 1940FOREIGN PATENTS Number Country Date 23,617 Australia Apr. 2, 1930

